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ClassDefHandler.java
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ClassDefHandler.java
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////////////////////////////////////////////////////////////////////////////////
// checkstyle: Checks Java source code for adherence to a set of rules.
// Copyright (C) 2001-2020 the original author or authors.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
////////////////////////////////////////////////////////////////////////////////
package com.puppycrawl.tools.checkstyle.checks.indentation;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;
/**
* Handler for class definitions.
*
*/
public class ClassDefHandler extends BlockParentHandler {
/**
* Construct an instance of this handler with the given indentation check,
* abstract syntax tree, and parent handler.
*
* @param indentCheck the indentation check
* @param ast the abstract syntax tree
* @param parent the parent handler
*/
public ClassDefHandler(IndentationCheck indentCheck,
DetailAST ast,
AbstractExpressionHandler parent) {
super(indentCheck, getHandlerName(ast), ast, parent);
}
@Override
protected DetailAST getLeftCurly() {
return getMainAst().findFirstToken(TokenTypes.OBJBLOCK)
.findFirstToken(TokenTypes.LCURLY);
}
@Override
protected DetailAST getRightCurly() {
return getMainAst().findFirstToken(TokenTypes.OBJBLOCK)
.findFirstToken(TokenTypes.RCURLY);
}
@Override
protected DetailAST getTopLevelAst() {
return null;
// note: ident checked by hand in check indentation;
}
@Override
protected DetailAST getListChild() {
return getMainAst().findFirstToken(TokenTypes.OBJBLOCK);
}
@Override
public void checkIndentation() {
final DetailAST modifiers = getMainAst().findFirstToken(TokenTypes.MODIFIERS);
if (modifiers.hasChildren()) {
checkModifiers();
}
else {
if (getMainAst().getType() != TokenTypes.ANNOTATION_DEF) {
final DetailAST ident = getMainAst().findFirstToken(TokenTypes.IDENT);
final int lineStart = getLineStart(ident);
if (!getIndent().isAcceptable(lineStart)) {
logError(ident, "ident", lineStart);
}
}
}
if (getMainAst().getType() == TokenTypes.ANNOTATION_DEF) {
final DetailAST atAst = getMainAst().findFirstToken(TokenTypes.AT);
if (isOnStartOfLine(atAst)) {
checkWrappingIndentation(getMainAst(), getListChild(), 0,
getIndent().getFirstIndentLevel(), false);
}
}
else {
checkWrappingIndentation(getMainAst(), getListChild());
}
super.checkIndentation();
}
@Override
protected int[] getCheckedChildren() {
return new int[] {
TokenTypes.EXPR,
TokenTypes.OBJBLOCK,
TokenTypes.LITERAL_BREAK,
TokenTypes.LITERAL_RETURN,
TokenTypes.LITERAL_THROW,
TokenTypes.LITERAL_CONTINUE,
};
}
/**
* Creates a handler name for this class according to ast type.
*
* @param ast the abstract syntax tree.
* @return handler name for this class.
*/
private static String getHandlerName(DetailAST ast) {
final String name;
if (ast.getType() == TokenTypes.CLASS_DEF) {
name = "class def";
}
else if (ast.getType() == TokenTypes.ENUM_DEF) {
name = "enum def";
}
else if (ast.getType() == TokenTypes.ANNOTATION_DEF) {
name = "annotation def";
}
else {
name = "interface def";
}
return name;
}
}